I used to know a girl that did that for a living. She used to really make me laugh, with how she could switch between modes so seamlessly and instantaneously. We'd be having lunch somewhere, having a normal conversation, a few laughs, and then her phone would ring from one of her clients, and she'd go into Goddess mode with them, before returning to RL and having some more tea and crumpets with us. She made a pretty good living out of it, and they seemed happy enough to be forking over their cash, mainly it appeared to be given abuse on the phone occasionally.